Viaan flowers

Viaan flowers are 13 meter tall, vase-shaped flowers from the moon Pluvia. They are silicon-based, so they can survive in the vacuum of space. Their glowing, orange petals perform radiosynthesis with radiation, similar to using leafs to do photosynthesis with light, water and air. The Pluvian Natives eat their petals, and the flowers were possibly bio-engineered many millenia ago.